TI-2024-36146 Aliases CVE-2024-53987 GHSA-2x5m-9ch4-qgrr

Possible XSS vulnerability with certain configurations of rails-html-sanitizer 1.6.0

LOW 12CWE-79Published 2024-12-02 · Updated 2024-12-03

Key facts

Attack vector: Network
Privileges required: None
User interaction: Passive
Attack complexity: Low
Attack requirements: Present
Impact type: Cross-site scripting
Confidentiality · integrity · availability: None · None · None
Fix status: Partial Red Hat: 2 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-79.

Summary

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. There is a possible XSS vulnerability with certain configurations of Rails::HTML::Sanitizer 1.6.0 when used with Rails >= 7.1.0. A possible XSS vulnerability with certain configurations of Rails::HTML::Sanitizer may allow an attacker to inject content if HTML5 sanitization is enabled and the application developer has overridden the sanitizer's allowed tags where the "style" element is explicitly allowed and the "svg" or "math" element is not allowed. This vulnerability is fixed in 1.6.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00446 39th percentileScored 2026-11-07

Fix Partial rails-html-sanitizer (rails): 1.6.1rails-html-sanitizer (RubyGems): 1.6.1Red Hat: 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Rails	rails-html-sanitizer	1.6.0 to before 1.6.1	1.6.1	Patch available	CNA
—	rails-html-sanitizer (RubyGems)	1.6.0 to before 1.6.1	1.6.1	Patch available	GHSA-2x5m-9ch4-qgrr

rails-html-sanitizer VendorRails Affected 1.6.0 to before 1.6.1 Fixed in 1.6.1 Patch available CNA
rails-html-sanitizer (RubyGems) Vendor— Affected 1.6.0 to before 1.6.1 Fixed in 1.6.1 Patch available GHSA-2x5m-9ch4-qgrr

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:rubyonrails:rails_html_sanitizers:1.6.0:::::rails::	1.6.0	Vulnerable	Rails

cpe:2.3:a:rubyonrails:rails_html_sanitizers:1.6.0:*:*:*:*:rails:*:* Versions 1.6.0 Vulnerable ·Rails

Remediation

Fix · CNA rails-html-sanitizer (rails) Fixed in 1.6.1
Fix · GHSA-2x5m-9ch4-qgrr rails-html-sanitizer (RubyGems) Fixed in 1.6.1 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat 3scale API Management Platform 2	Affected	No fix yet: Fix deferred
Red Hat Satellite 6	Affected	No fix yet: Fix deferred

Not affected: 2 products

Red Hat 3scale API Management Platform 2
Red Hat Satellite 6

Timeline

2026-10-02 Threatist record created from CVE-2024-53987
2026-10-03 Alias added: GHSA-2x5m-9ch4-qgrr

References

Patch 1

https://github.com/rails/rails-html-sanitizer/commit/f02ffbb8465e73920b6de0da940f5530f855965e

Advisory 2

Other 2

TI-2022-13919 Cross-site scripting in https://github.com/rails/rails-html-sanitizer CVSS 3.1MEDIUM 6.1
TI-2024-36144 Possible XSS vulnerability with certain configurations of rails-html-sanitizer 1.6.0 CVSS 4.0LOW 2.3
TI-2022-07576 Inefficient Regular Expression Complexity in rails-html-sanitizer CVSS 3.1HIGH 7.5
TI-2022-07578 Possible XSS vulnerability with certain configurations of rails-html-sanitizer CVSS 3.1HIGH 7.2
TI-2022-07579 rails-html-sanitizer contains an incomplete fix for an XSS vulnerability CVSS 3.1MEDIUM 6.1
TI-2022-07577 Improper neutralization of data URIs allows XSS in rails-html-sanitizer CVSS 3.1MEDIUM 6.1

See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences